Condensate and air removing apparatus.



R. SUCZEK.

CONDENSATE AND MR BEMOVING APPARATUS.

APPucknon man umso. me.

Patented May 14, 1918 SSHEElS-SHEET 2 UNITED sTATEs PATENT OFFICE.

ROBERT SUCZEK, 0F PHILADELPHIA, PENNSYLVANIA, ASSIGNOR T0 C. H. WHEELERMANUFACTURING 'COMPAN Y, OF PHILADELPHIA, PENNSYLVANIA, A CGRPOBATION OFPENNSYLVANIA.

CON DENSATE AND AIB REMOVING APPARATUS.

Specification of Letters Patent.

Patented May 14, 1918.

Application lcd December 80, 1916. Serial No. 139,985.

To all whom t ma concern Be it known that I, ROBERT SUOZEK, a subject ofthe Emperor of Austria-Hungary, residing in the city of Philadelphia,county of Philadelphia, and State of Pennsylvania, have invented certainnew and useful Improvements in Condensate and Air Removing Apparatus, ofwhich the following is a specification.

My invention relates to apparatus for removing condensate and air fromeither a surface condenser or jet condenser, or kindred apparatus.

My'invention resides in apparatus of the character referred to in whichthe condensate umping means is preferably of the centrifugal type, inwhich may be employed an auxiliary impeller to preliminarily acceleratethe condensate to improve the operation due to the low submergence, withmeans, such as ejector apparatus, for withdrawing air from the condenserto maintain a vacuor stages then delivering the air into t econdensatepump.

By such construction the double stage ap aratus is employed only instarting, and on y during such starting period is the steam consum tionfor the ejector apparatus high, Therea teronly the first or earlystages-are employed, consuming only relatively small amount of steam,the remainder of the work for raising the pressure of the air toatmospheric being performed by the condensate pump.

My invention resides inthe apparatus of the character hereinafterdescribed and claimed.

For an illustration of some of the various forms In f invention maytake, reference is to be haii to the accompanying drawings, in which:

Figure 1 is a vertical sectional View, some parts in elevation, throughapparatus ernbodying my invention.

Fig. 2 is a sectional View, Home parts in elevation, of a modified forniof condensate pump and auxiliary structure.

Fig. 3 is a sectional view, some parts in elevation, ot' a modificationof the structure shown in Fig. 2.

Fig. 4 is a vertical sectional view. some parts in elevation, of amodified arrangement in which the pumping mechanism is in two distinctunits.

Fig. 4 is a cross sectional view through a art of Fig. 4.

n Fig. 1, (j represents a surface condenser for condensing steam orvapor, especially the exhaust steam from steam power plant or the like.The steam to he condensed enters through the opening 1, and thecondensate is delivered through the opening 2 into the passage 3 whichdelivers to the suction of a centrlfugal pump P, the latter comprisingthe usual volute or dischar casing 4 and the runner or impeller I avingthe venes V. The impeller I is secured upon and driven by the shaft 5driven by any suitable means, as an electric motor or steam turbine. Atthe entrance to the suction side of the impeller I is provided anauxiliary im'peller or Huid moving device Il of any sultable type, as ascrew propeller, attached at its periphery to and movable with the mainlimpeller I. A third impeller I2, secured to and rotatable with the maininpeller I and delivering between impellers I1 and I comprises aplurality of radlally outwardly' extending channels, or it may be acircumferentiall continuous impellcr, ofnumerousV charme s separated bthe usual venes. The venes of the impel er` I, are indicated at V, andserre to connect the impcllcr l: to itnpcllc-r i. 'l`hc suvtiou oritirvot' thc inipeller lu is thv longitudinally cxtcnding tube or pipe ti.whichlias a rotittl' hearing iii the stulling box.tl1ctuu\l'icouimunicating with thv chainher S.

(,omniunhating with thv vapor space ol' the condenser is the pipe t)through which is drawn air or nou-tfoudcnsahle gas into thc ejector F.ot' an)l suitable type. tti-which elastic inolirv fluid, as steunt. isdclit'rrcd. thc strani ciniltcd l'toin thc ejector nomlc eotraining theair 'lvlircrcd thrt n g'h thc pipe 9. thc mixture passing through thvpipiI l0, cont rolled hr \al\ c ll.to thv. 1eecond stage cjcctor lllwhich dclircrs thc air and strani through the member 12. Branching fromthefpipc 1t) is a pipv 123, controlled h v valvi- L. coiiiinniiicatiunAwith thc at'orcnwittioncd chamber 8.

The ejcetors 1*) and ll, may hv ot' an)v ot thc types disclosed incti-pending application Serial Number 179.859. filed Juli' lt, itil?.though my invention is not limited tu' thv character ot ejectorsemployed.

The operation is as follows:

In startin the system, the valve 14 is lirst closed` and t ie valve 11opened; the ejectors E and El are then Litarted by supplying them` withsteam in the usual way, whvrcupon the air in withdrawn from within thccondenser C, and a suitable degree ot \acunin produced. The firstejector E `steps itp the pressure of the air o1" gus through a `uitablev range, as for example, from 29 inches` of vacuum to, say, 24inches of vacuum. while the second ejector E1 raises thc prvssure from,say, 24 inches of vacuum to or above atmospheric pressure 0r othersuitable pressure. The desired vacuum in the condense;` C havingtliusbeen produced and the centrifugal ump having een brought up to speed, Vave 14 is first opened and then valve 11 closed and the steam Isupply tothe ejector E1 discontinued.

The steam condensed into water, or eondensate, passes through theopening 2 and tinds a level more or less approximate the level indicatedby the line 15, and is accelerated by the im ellen I, and moved into theiinpeller I, which latter further accelerates the liquid Itend deliversit at higher pressure into the discharge casing 4, from which it isdelivered to any suitable point or device. By'this coperation of theinipellers I1 and I an cect. is produced which is equiyaleiit toincreasing the submergence of the main inipetler T, the submergencebeing well under stood to be the distance between the condensate level15 and the axis or center of the innelter I. That is to Say, byemployment 'if the preliminary or auxiliary impeller Il the iin'peller Iis working to better advantage in thahthe liquid at the entry to theinipcllci' l has hccn prcliininarily accelerated by the iinpcllvr l,. acondition similar to that ohlainiu;r whvu thv sulnncrgcnee of theimpvllcr l is substantially greater than that correspondinthr with thvdistance between the t Aiitci' ot' thc iinpcllcr l and th.I condensatelevel 15.

`*iinultancously the vivi-'tor ll is removing air fr an thc condenser (iand delivering it with thc .steam employed in the ejector through thepipe t3 and vahc 14 and into thv casing .Q from which itl passes intothc suction (3 of: the third impcller l. which aceclcratcs the mixturehy centrifugal action and raises its prvsstre and delivers it hvtwvvnitnpvllcrs lI and i into tlc channels of thc uiaiii impellvr l betweenneighboring Hines V thvrcot'. thv condensato niorcd li \v thv iinpcllcri ci'iti'ainiiu;A thc air and inorv ing it outwardly with thv condensateto th:` dischargicasing ft at any suitable pressure. a` atmosphericpres-ure or higher,

ln Fig. 2 thc condensatipinnp 1 again comprises thc main impcllvil ltiming thc ranvs V. driwn by thv shalt Si` Within thel iinpvllcr l isdisposed the auxiliar)A iinpvllcr l1 secured upon thcv shaft and timingthc raiics Vw the suction t3 of thc inipeller ll `eontnittnicating withtinchandler Il rt"ei\' ing the condensate from the condenser. not shown.The iuipellcr l is supported and scvurcd upon the inipcller l'` by meansot' the spaced rilis 1G rcscn'iljiling the spokes of a wheel.

Front thv ejector apparatus`r not shown. connection is made at 17through the air and steam conducting tubes 1S to the annular clian'ibcrs19 on opposite sides oii'the iniicllcr l. Pines` 2l). delivering,Tpreferably lirv steam i'roni ani' suitable, source. com niunicate withthe annular chamber '21. 0n each side of thc impvller l. with .suitablet ircuntt'crvntial spacing. is provided a plurality of steam lnozzles 22delivering across the chambers 1f) and through thev spaces hvtween theribs 16 into the suction side of the inipeller.

The condensate is firstV accelerated hy the auxiliary inipcller Il anddelivered t'hvrehy into the t'ree space between the peripheryef the iinteller I, and thc inncr edges of the Yanes il ot', the main iinpellvr I.und troni such space is inored and fui-thc accvlera-ttul and raised inpressure by the main impeller I and delivered into the discharge casingrljoo ' through the rose masses of air and vapor alternating therein Yture is eiiti'ained by the livered thereby into the discharge casing 4at at least atmospheric pressure.

The ribs 16 may be so formed as to in effect constitute vanes whichassist in the movement oi' the vapor and air delivered by the pipesl ISinto the condensate.

In Fig. 3 double stage compressing a paratus. comprising the ejectoi's Eand 1 in series. deliver air from the condenser through the tubes 1S, asdescribed in connection with F ig. 2. Intliis case, however, the ribs loare omitted and the vanes V2 and V ofthe inipellers Il and Irespectively, are integral and continuous from the inner edge :23 to theoliter edge 24.

The operation is substantially the same as described in connection withFig. 2, the inipeller Il preliminarily accelerating the condensate.which is then further accelerated and raised in pressure by theiinpeller I, the vapor and air mixture being delivered into thecondensate while passing from one im-A peller to the other.

Iii Fig. l a plural iinpeller arrangement is again shown. In this casethe condensate from the condenser is delivered through the passage 3 tothe suction or intake of the preliminary impeller 1 which is driven bythe shaft 5 and accelerates the condensate and simultaneously raises itspressure-fthe condensate being delivered from the discharge easing 4through the pi e 25 to the suction of the second or main impeller I alsodriven by the shaft 5, which further accelerates the condensate anddelivers it at higher pressure to the disharge casing 4. Disposed withinthe impeller I is the stationary rose or plural channel device 26, shownin cross section in Fig. 4, and comprising the channels27, of anysuitable number. With the channels 27 of the members 26 communicates thepassage or ipe 28 in communication with the ejector The ejector E,single or multipleistage, withdraws air from the condenser. whosecondensate is delivered to the passage 3. and the iiiixturi of air andsteam from the ejector E isA delivered through the pipe 26 into theiinpeller canals,

with masses of condensate and delivered tlierebi7 at higher pressure. atleast atmospheric pressure, into the casing 4. The condensate deliveredby the pipe 25 to the impeller I icaches the intake ofthe iinpeller Ithrough `the spaces'29, Fig. i", between the channel `it'ornliingmembers 27.

Pursuant to requirement for division, Some of the subject matter hereindisclosed is claimed in my divisional application Serial Number210,054,1iled January 7, 1918. Cei'- tain of the ysnb'ect matter hereindisclosed and claimed is disclosed in my copending apcondensate 'andde:A

.plications Serial Number 167,061, filed May 7, 1917, and Serial Number207,744, filed December 18, 1917.

What I claim is:

1. The combination with a condenser, of punipin means for removingcondensate comprising a submerged auxiliary impeller, a main inipeller,said auxiliary impeller delivering condensate under pressure in denseliquid form to said main.impe1ler, and means delivering air from saidcondenser into the condensate between the auxiliary and main impellers.

The combination with a condenser, of pumping means for removingcondensate comprising submerged auxiliary and main impellers, and meansfor delivering air from the condenser to the condensate between theauxiliary and main impellers.

3. The combination with a condenser, of pumping means for removingcondensate comprising a submerged auxiliary impeller, a main impeller,said auxiliary impeller delivel-ing condensate under pressure in denseliquid form to said main impeller, an ejector for withdrawing air fromsaid con denser, and means for conducting the air removed by saidejectorsinto said condensate between the auxiliary and main impellers.

1. The combination with a condenser, of pumping means for removingcondensate comprising submerged auxiliary and main i'mpellers, means forextracting air from said condenser, and means for conducting theextracted air into said condensate between said auxiliary and maininipellers.

5. The combination with a condenser. of

a condensate-reinoving pump, plural stage ejector apparatus forwithdrawing air from said condenser and raising it in pressure, meansfor discontinuing operation of a later stage of said ejector apparatusaland means for thereafter conducting the air removed from Vsaid condenserinto said condensate pump. f.

6. The combination with a condenser, of a centrifugalcondensate-removing pum plural stage ejector apparatus for wit 1-drawing air from said condenser and raising it in pressure. means fordiscontinuing operation of a later stage of said ejector apparatus,`andmeans for tl'iereafter couducting the air removed from said condenseriiit'o an impeller of said condensate pump.

i. The combination with a condenser, of

pumping means for removing condensate after conducting tie air` removedfrom the.

condenser in toithe condensate between said auxiliary and mainimpellers.

ion

8. The combination with a condenser, of a condensate-removing pumpcomprising n submerged auxiliary impeller deliveringto a main ilpcller,a third impeller delivering into said main impeller, and an airconnection from said condenser into the suction of said third im eller.

9. The com ination with. a condenser, of a condensate-removin pumpcomprising a submerged auxiliary lmpeller delivering to a mainlinpeller, a third impeller delivering into said `inain impeller beyondsaid auxiliar impeller, and means for extracting air rom said condenserdelivering into said third impeller.

10. The combination with a condenser, of a condensate-removing pumpcomprising a submerged auxiliary impeller delivering to a main impeller,,a third impeller delivering into said ,main impeller beyond saidauxiliary impeller, and an ejector removing 'air from said condenser anddelivering the same into said third impeller.

ll. The combination with :i condenser, of a centrifugalcondensate-removing pump havin an impeller, another impeller deliveringinto said impeller, and an air connection from said condenser into thesuction of said other impeller.

12. The combination with a condenser, of a centrifugalcondensate-removing pump having an impeller, another impeller deliveringinto said impeller, and means for extracting air from' said condenserdelivering into the suction of said other impeller.

13. The combination with a condenser, of a centrifugalcondensate-removing pump havingan impeller, a condensate'connection fromsaid condenser to said impeller, another impellerr whose suction inletextends through and to the exterior of said condensate connection, andan air connection from said condenser to the suction inlet of said otherimpeller,

14. The combination with a condenser, of a centrifugalcondensate-removing pump having an impeller, a condensate connectionfrom said condenser to said impeller, another impeller'whose suctioninlet extends through andto the exterior of said condensate connection,and means for extractin air from said condenser and deliverin it intothe suction inlet of said other impe ler.

1,5. The combination with a condenser, 'of a centrifugalcondensate-removing pump, a condensate connection from said condenser tosaidV pump a tubular member rotating with the impeller of said pump andextending to the exteriorof said condensate connection, a chamber withwhich said tubular Q centrifugal air und water removing apparamembercommunicates, and an air connection from-Said condenser to said chamber.

16. The combination with a condenser, of

a centrifugal condensate-removing pump, a

condensate connection from said condenser to said pump, a tubular memberrotating with the impeller of said pump and extending to the exterior ofsaid condensate lconnection, a chamber with which said tubular membercommunicates, and. means ior ex tractng air from said condenser anddelirering it into said chamber.

17. The combination with a condenser, of an impeller, a pump casinginclosing said impeller, a tubular suction inict for said impellerextending to the exterior of said casing, a chamber exterior to saidpump casing with which said tubular extension comnmnL cates, and meansfor conducting air sepa4 rately from the condensate from said rondenserto said chamber.

1S. The combination with :i condenser, of a centrifugalcondensatenemoi'ing pump. a tubular member rotating with (he impellorstructure of said pump and'cxiending lo the exterior of said pump` aclmmher with which Said tubular member comnmnirates, u d means forconducting air separately "rom the condensate from said condenser tosaid chamber, the inner end of said tubular n mber communicating withsaid impcllrr structure.

19. The combination with a condense", ot' a centrifugal condensateremoving pump, a connection for delivering condensate from saidcondenser to said pump a tubular member rotatable with the impellerstructure of said pump and extending to the exterior thereof, a chamberwith which said tubular member communicates, an air connection from Saidcondenser to said chamber separate from said first named connection.`and an ejector for Aremoving air from said condenser and deliverin itthrough said air connection into said c amber.

20. Centrifugal water and air removing apparatus comprising impellershaving independent suctions, means for delivering air to the suction ofone of said impcllers, means for delivering water to the suction ofanother of Said impellers, said one impeller increasing the ressure ofthe air and deliv ering it into said other impeller. l

21. Centrifugal water and air removing )ump structure comprising a pumpcasing, impellers in said casin having a common discharge, separatesuctions for said impellers. means for conducting air to the suction ofone of said impellers, and means t'or con ducting water to the suctionof :mother of said impellers, said one of said im pellers dclivering theair acted upon thereby into said other impeller.

22. The, combination with a condenser, ot

tus comprising impellcrs having independent suctions, means forconnecting thcsuttlon of one of said imnellers with Hw` nir space ofseid condenser, means for conducting e611?, pressure into the suction ofone of seid inldnsate from said condenser to the suction of said otherinpeiler, said one mpeller increasing the pressure of the air andde1iverin it int/o the water acted upon by said otf er impeller.

23. The combination with a condenser, of centrifugal air and waterremoving apparw tus comprising impellers having independent suotions,means for removing air from said condenser und delivering it at higherpe11ers,. means for conducting condensate from Said condenser to thesuotlon of another of said impellers, ,said one lnpeller 16 increasingthe pressure of the iir and delivering it into said other impeller.

In testimony whereof I have hereunto affixed my signature this 28th deyof December, 1916.

ROBERT SUCZEK.

